MP3 libraries can get messy, from duplicated files to untitled tracks cluttering up the end of your collection. Reezaa MP3 Tag Editor can help you sort out the names of your MP3 collection.
Tags are the meta-information that is added to a file so the song name and artist etc will show up in your music player. With Reezaa MP3 Tag Editor you can edit this information, individually, or more usefully in batches. Batch editing is useful, as it mean you only need to enter artist and album titles once. You can save data in tag formats ID3v1.1 and IDv2.x, which to be honest is more than you need! Most players support ID3 now. You can also associate lyrics and a picture with your music.
Reezaa MP3 Tag Editor offers you all the tag editing you might want and more, but its major fault is that you can quite easily do this in most media players today. Apple's iTunes for example has excellent tag editing, and is more intuitive than here. Nevertheless, if for some reason you want to do batch edits on tags for music files, Reezaa MP3 Tag Editor is a pretty good option.
Most media players do this too, but Reezaa MP3 Tag Editor still does a good job of tag labeling and editing.